NO LINKS OR ELSE YOU'LL BE REPORTED! Only answer if you're very good at English.

Read the dictionary entry.foolproof (adj): 1 : designed to function despite human error 2 : without possibility of failure

Which sentence uses the word foolproof as described by the second definition?

A: The defense lawyer concluded his remarks with a foolproof argument of the defendant's Innocence.

B: Foolproof methods of transportation may become a reality in the near future.

C: The new computers were not foolproof in the hands of untrained users.

D: Scientists were certain that despite being out of their control, the probe would be foolproof.​